Trifluorostyrene and substituted trifluorostyrene copolymeric compositions and ion-exchange membranes formed therefrom

Polymeric compositions are derived from copolymers of .alpha.,.beta.,.beta.-trifluorostyrene with a variety of substituted .alpha.,.beta.,.beta.-trifluorostyrenes. These compositions are suitable for use as membranes, particularly as ion-exchange membranes, and most particularly as solid polymer electrolytes in electrochemical applications, such as, for example, electrochemical fuel cells.

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Claims

1. A polymeric composition comprising: ##STR9## where m, n and p are each an integer greater than zero, and A.sub.1 is selected from the group consisting of fluorine and CF.sub.3.

2. A membrane comprising the polymer of claim 1.

3. A membrane consisting essentially of the polymer of claim 1.

4. An ion-exchange membrane comprising the polymer of claim 1.

5. An ion-exchange membrane consisting essentially of the polymer of claim 1.

6. An electrochemical fuel cell comprising the ion-exchange membrane of claim 4.

7. An electrochemical fuel cell comprising the ion-exchange membrane of claim 5.

8. A polymeric composition consisting essentially of: ##STR10## where m, n and p are each an integer greater than zero, and A.sub.1 is selected from the group consisting of fluorine and CF.sub.3.

9. A membrane comprising the polymer of claim 8.

10. A membrane consisting essentially of the polymer of claim 8.

11. An ion-exchange membrane comprising the polymer of claim 8.

12. An ion-exchange membrane consisting essentially of the polymer of claim 8.

13. An electrochemical fuel cell comprising the ion-exchange membrane of claim 11.

14. An electrochemical fuel cell comprising the ion-exchange membrane of claim 12.

Referenced Cited
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3341366 September 1967 Hodgdon, Jr. et al.
3528858 September 1970 Hodgdon, Jr. et al.
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4605685 August 12, 1986 Momose et al.
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Foreign Patent Documents
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Other references
  • "Palladium-Catalyzed Cross-Coupling of Perfluoroalkenylzine Reagents with Aryl Iodides. A New, Simple Synthesis of .alpha.,.beta.,.beta.-Trifluorostyrenes and the Stereoselective Preparation of 1-Arylperfluoropropenes", J. Org. Chem., vol. 53, pp. 2714-2720. The Spin Delocalization Substitutent Parameter .sigma..sub.JJ.5. Correlation Analysis of .sup.19 F Chemicals Shifts Of Substituted Trifluorostyrenes. The Unresolved Polar Substituent Parameter .sigma..sub.mb, Journal of Physical Organic Chemistry, vol. 3, 643-650. ".alpha..beta..beta.-Trifluorostyrene and polymers based on it", Russian Chemical Reviews, vol. 59, pp. 575-589.
Patent History
Patent number: 5773480
Type: Grant
Filed: Dec 18, 1996
Date of Patent: Jun 30, 1998
Assignee: Ballard Power Systems Inc. (Burnaby)
Inventors: Charles Stone (Vancouver), Alfred E. Steck (West Vancouver), Jinzhu Wei (Burnaby)
Primary Examiner: Fred Zitomer
Law Firm: McAndrews, Held & Malloy, Ltd.
Application Number: 8/768,615